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AMTP777 Datasheet(PDF) 6 Page - Aplus Intergrated Circuits

No. de pieza AMTP777
Descripción Electrónicos  APLUS INTEGRATED CIRCUITS INC
PDF  8 Pages
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Fabricante Electrónico  APLUS [Aplus Intergrated Circuits]
Página de inicio  http://www.aplusinc.com.tw
Logo APLUS - Aplus Intergrated Circuits

AMTP777 Datasheet(HTML) 6 Page - Aplus Intergrated Circuits

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Integrated Circuits Inc.
aMTP777
MAY 10, 2011
6
TYPICAL APPLICATIONS
Using 3.3V Battery Direct Drive Speaker
Using 4.5V Battery with COUT speaker drive
VSS, VSSA
4.5V
RSTB
PB0
PB1
PB2
OSC
0.1uF
Tr
VOUT2_
COUT
8
1/4W
Speaker
HT7335
Output driving of HT LDO:
HT7133 (30mA, 3.3V)
HT7536 (100mA, 3.6V)
HT7335 (250mA, 3.5V)
Rb
4.7K
Note :
PB0 to PB2 are set to input
C1 and C2 must be connected directly on the VDD/VDDA and
VSS/VSSA pins
VDDA
C1, 0.1uF
ROSC=220K
Rp=1ohm
VDD
C2, 0.1uF
DAT
SCK
DO
EN
VDDA
VSS, VSSA
3.3V
RSTB
PB0
PB1
PB2
OSC
Crst = 0.1uF
C1, 0.1uF
ROSC=220K
VOUT1
VOUT2_
COUT
Rrst = 4.7K
Note:
1.
PB0 to PB2 are set to input; PB3 is set to output
2.
C1 and C2 must be connected directly on the VDD, VDDA and VSS, VSSA pins of the chip
R1
1M
SP
Rp=1ohm
VDD
C2, 0.1uF
DAT
SCK
DO
EN



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